<div id="navigation">
    <ul>
        <volist name="Think.config.TWEETS_CATEGORY" id="vo" key="k">
            <eq name="k" value="1">
                <li class="<if condition='(int)$_GET.cate_id eq 0'>selected</if>"><a href="__ROOT__/{{$school.school_abbr}}">{{$vo}}</a></li>
                <li class="line"></li>
            <else/>
                <if condition="$k lt count(C('tweets_category'))">
                    <li class="<if condition='(int)$_GET.cate_id eq $k-1'>selected</if>"><a href="__ROOT__/{{$school.school_abbr}}/cate/{{$k-1}}">{{$vo}}</a></li>
                    <li class="line"></li>
                 <else/>
                    <li class="last <if condition='(int)$_GET.cate_id eq $k-1'>selected</if>"><a href="__ROOT__/{{$school.school_abbr}}/cate/{{$k-1}}">{{$vo}}</a></li>
                </if>
            </eq>
        </volist>
    </ul>
</div>